US169605A - Improvement in oscillating printing-presses - Google Patents

Description

t e e h S s t I9 e h S 3 S E UR 97G N in L N II R 5 G NN I N T A m WI C S 0 PatentedNov. 2,1875.

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Inventors.

Witnesses. WQWW.

' 5 Sheets-Sheet 2. J. WATSON 80. L. De HUFF.

OSCILLATING PRINTING-PRESS.

Patented Nov. 2,1875.

Fig. 2.

Inventors.

- 5Sheets-Sheet {1. J. WATSON & J'. L. .DeHUFI'.

OSCILLATING PRINTING-PRESS.

No. ,169, 60 5. Patented ifov. 2,1875.

Fig. 4. 1

Witnesses. Inventors.

UNITED STATEs PATENT OE IoE;

JOSEPH WATSO OF EVERETT, AND H L. DE HUFF, OF WOBURN, MASS.; SAID DE HUFF ASSIGNOR T0 SAID WATSON.

IMPROVEMENT IN OSClLLATING PRl'NTlN G-PR'ESSES.

Specification forming part of Letters Patent No. 169,605, dated November 2, 1875 August 26, 1875.

To all whom at may concern:

Be it known. that we, JOSEPH WATSON, of Everett, and JOHN L. DE HUFF, of Woburn, both in the county of Middlesex and State of Massachusetts, have jointly invented certain new and useful Improvements in Printing- Presses, of which the following, taking in connection with the accompanying drawings, is'a specification.

The first part of our invention relates to themanner of constructing and hanging the typebed and itconsists in pivoting the bed to the frame at a point near its upper edge, but in the rear of its face upon which the type are to rest, in such amanner that'the bed may be swung up into a position nearly at rightangles to its position when an impression is taken, to make the type-form more conveniently accessible for making changes, corrections, &c., without the necessity of removing the chase from the press to an imposing-stone, and so that the bed, when not supported in such elevated position, will fall, and be retained in proper position for taking an impression by the force of gravity. It further consists in the combination, with a type-bed pivoted as above described, of one or more adjustable bearing-points, against which the lower portion of the back Side .of the bed rests when in position for taking an impression.

The second part of our invention relates to a device for throwing off the card or envelope after the impression has been taken; and it consists in the use of a knock-ofl finger resting on the upper surface of the tympan-sheet, and attached to a rod or bar mounted in suitable bearings on the under side of the platen, and having a spring connected therewith in such a manner that the tension of said spring tends to move the rod and knock-offfiuger to- Ward the card or envelope, for the purpose of knocking the card or envelope off from the platen and suitable devices for moving back said rod and knock-off finger, and locking the same, and a device for releasing the look, so as to allow the spring to act at the proper time, as will be further described.

In the drawings, Figure 1 is a plan, Fig. 2 a side elevation, Fig. 3 a front elevation, with aportion of the ribs on the platen broken away,

application filed and Fig. 4 a vertical section on line '09 won Figs. 1 and 3, all illustrating a press embodying our invention. Fig. 5 is aside elevation, showing the type-bed thrown up in position for locking up a form or making corrections, the knock-ofl devices being'nemoved.

A is the frame; B, the platen, constructed, arranged, and operated substantially as described in a pending application of John L.

DeHufi filed June 29, 1875 5 G, the operat ing hand-lever, and D the bed. The bed D is provided with ears a a, by which, and the wristpins b b, it is pivoted to the frame A at a point in the rear of the upper edge of said bed, as shown.

The bed D naturally hangs in the position shownin Figs. 2 and 4, with the rear side of its lower portion resting against the adjustingscrews 0 0, in which position it is retained by force of gravity.

The bed D is also provided with a projecting lug, d, on its back Side, near the lower edge, which serves to hook over the upper edge of the platen B when the bed is thrown up into the position seen in Fig. 5. This arrangement of the typebed is a very great convenience, in that it saves a great deal of labor and a great many steps for the operator, it being very much less labor to swing the bed up into the position shownin Fig. 5, and make the corrections or adjustments of the form on the bed, than it is to take out the chase, carry it to' an imposing-stone, make the correctionsand changes, and replace the chase on the bed again. E is a rod or bar, mounted in suitable bearings e f on the under side of the platen B, in a position about under the center of the width of the platen, and parallel with the face of the laten and the axis about which the platen vibrates to give the impression. F is a spiral spring surrounding the rod E, one end of which bears against the bearing 0 and. the other against the pin 9 set in the rod E. The rod E projects beyond the end of the platen on the right, and has adjustably secured thereto the hub or boss G, to the upper side of which is secured thelight spring-finger or knock-oft plunger h, of the form shown, arranged to rest in close contact with the upper surface 'of the tympan-sheet H, with its end 2 I I a 169,605

just back of the line of the end of a card or envelope resting against the gage-pins i z' and j. The left-hand end of the bar or rod E is pivoted to the upper end of the radius-arm I, the outer edge of which is madecurved or cam-shaped, as shown, from 70 to l, and has formed on or secured to its upper end, the projecting toe m arranged to engage with the pivoted latch J when the rod E is forced back by'the cam-edge of the radius-arm I coming in contact with the stationary arm K during the last part of the downward motion of the platen. The latch J is pivoted at nto a stand or ear cast upon or secured to the under side of the platen, as shown, and has pivoted to its lower end the pawl-hook L, held in a position nearly at right angles to the latch J by the stop-pin 0, set in said latch, and adapted u to engage by its hook with a pin, 19, set in a fixed position in the frame A.

The operation of our improved device for discharging the card or envelope from the platen after'it has been printed is as follows: Theparts being in the positions shown in Figs. 1, 2, 3, and 4, the radius-arm I has been thrown back by coming in contact with the fixed arm K and carried with it, the bar or rod E com.- pressing the spring F and moving the knockoff finger or plunger h back, so that its inner end is outside or to the rightof the gage-pin 7'. The card or envelope to be printed is now placed on the platen, with its lower edge resting against the gage-pins i 1;, and its righthand end against'the gage-pin j in a wellknown manner. The operator now gives the impression by moving the hand-lever 0 toward the front of the machine, and downward, the upward motion of the platen, and the parts attached thereto, causing the hook of the pawl L to pass over the pin 1 When theimpression is completed and the operator begins to raise the hand-lever G, and

as soon as the platen has descended far enough to release the card or envelope from the grasp of the holding-nippers, (if such are used,) the hook of the pawl engages With the pin 17, and by stopping the motion of the lower end of the latch J while its fulcrum continues to move, causes its upper end to be disengaged from the toe m, when the expansion of the spring F causes the rod E and knockoff finger h to he suddenly moved to the left, the finger h striking the edge of the card or envelope a sudden sharp blow, and throwing it off from the platen toward the left.

A continuation of the downward motion of I the platen causes the cam-edge of the radiusarm I to be brought in contact with and pass down by the arm K, throwing back the rod E. and finger h, compressing the spring F, and Withdrawing the toe-m from the path of the latch-lever, the upper end of which is thrown in front of toe. on by the preponderance of weight in its lower end; thus holding the finger it back until again tripped by the pawl L coming in contact with the pin 19, as before described.

M is the ink-distributing plate, and r r are the holding-screws forsecuring the chase to the bed.

What we claim as new, and desire to'secure by Letters Patent of the United States, is-

1. A type-bed of a printing-press, pivoted,

'at or near its upper edge, to the frame, and

ing or regulating screws, 0 0, arranged to operate substantially as described.

4. The knock-01f finger h, rod E, spring F, radius-arm I, provided with the toe m and cam is l, the latch J adapted to engage with the toe m, and stationary arm K, for retracting the rod E and spring F, and mechanism, substantially as herein setforth, for tripping the latch J, all constructed, combined, and operated substantially as described.

5. The combination of the finger h, rod E, spring F, radius-arm I, toe m, latch J, hookpawl L, pin p, and stationary arm K, all constructed, arranged, and operating substantially as described.

6. The knock-off finger h, adapted. to be moved in one direction by the spring F, the cam-shaped radius-arm I, the latch J, provided with the pawl-hook L, all attached to and moving with a vibrating or swinging platen, in combination with a fixed pin, 19, and arm K, when said parts are so arranged that the movement of the platen away from the type-form shall release the toe m from the latch J, allowing the spring F to operate the finger h, to knock off the card, and then retract the finger h, cause the latch J to again engage with the toe m, and retain them in such position till another impression has been made, substantially as described.

Executed at Boston, Massachusetts, this 23d day of August, 1875.

JOSEPH WATSON,

JOHN L. DE HUFF.

Witnesses:

N. (J. LOMBARD, WM. P. EDWARDS.

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